Initial commit: Triple-C app, container, and CI

Tauri v2 desktop app (React/TypeScript + Rust) for managing
containerized Claude Code environments. Includes Gitea Actions
workflow for building and pushing the sandbox container image,
and a BUILDING.md guide for manual app builds on Linux and Windows.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/src-tauri/src/models/project.rs

@@ -0,0 +1,69 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct Project {
+    pub id: String,
+    pub name: String,
+    pub path: String,
+    pub container_id: Option<String>,
+    pub status: ProjectStatus,
+    pub auth_mode: AuthMode,
+    pub allow_docker_access: bool,
+    pub ssh_key_path: Option<String>,
+    pub git_token: Option<String>,
+    pub git_user_name: Option<String>,
+    pub git_user_email: Option<String>,
+    pub created_at: String,
+    pub updated_at: String,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
+#[serde(rename_all = "lowercase")]
+pub enum ProjectStatus {
+    Stopped,
+    Starting,
+    Running,
+    Stopping,
+    Error,
+}
+
+/// How the project authenticates with Claude.
+/// - `Login`: User runs `claude login` inside the container (OAuth, persisted via config volume)
+/// - `ApiKey`: Uses the API key stored in the OS keychain
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
+#[serde(rename_all = "snake_case")]
+pub enum AuthMode {
+    Login,
+    ApiKey,
+}
+
+impl Default for AuthMode {
+    fn default() -> Self {
+        Self::Login
+    }
+}
+
+impl Project {
+    pub fn new(name: String, path: String) -> Self {
+        let now = chrono::Utc::now().to_rfc3339();
+        Self {
+            id: uuid::Uuid::new_v4().to_string(),
+            name,
+            path,
+            container_id: None,
+            status: ProjectStatus::Stopped,
+            auth_mode: AuthMode::default(),
+            allow_docker_access: false,
+            ssh_key_path: None,
+            git_token: None,
+            git_user_name: None,
+            git_user_email: None,
+            created_at: now.clone(),
+            updated_at: now,
+        }
+    }
+
+    pub fn container_name(&self) -> String {
+        format!("triple-c-{}", self.id)
+    }
+}